What potential pitfalls should be avoided when automating this process with a cronjob in PHP?

One potential pitfall to avoid when automating a process with a cronjob in PHP is not handling errors or exceptions properly. If an error occurs during the execution of the cronjob, it may go unnoticed and cause issues down the line. To mitigate this, make sure to log any errors or exceptions that occur during the cronjob execution.

// Set up error handling to log errors or exceptions
set_error_handler(function($errno, $errstr, $errfile, $errline) {
    error_log("Error: $errstr in $errfile on line $errline");
});

// Your cronjob code goes here
// For example, running a script to process data
// Make sure to handle errors and exceptions within the script